In every family there are two people: one who wants to watch TV, and one who knows how all the remotes work. Once a week my wife calls my name in a tone I have come to translate as: "You have done something to the TV, and I can't find the show I wish to watch." The following conversation ensues.
Me: "Well, your first problem is that the TV is showing the Blu-ray menu."
Her: "And I would know this how?"
"The strip of apps at the bottom is slightly different. It shows Hulu, for example, and we don't have Hulu. I could remove the Hulu link, but I chose to keep it there to remind you this isn't the TV menu. When you see the thing we don't have, you know you're on the wrong menu."
"But it says Netflix, and we have that. But when I go to Netflix, it asks me to log on."
"Right! Because I haven't entered our credentials in the Blu-ray app menu for Netflix. Just remember: the Blu-ray knows nothing about us. I've kept it in the dark."
"OK, that's helpful, but I still don't know how I get to the TV. I press the TV remote and it just turns off."
"Oh, well, actually, that's not the TV remote. That's the DirecTV remote."